Bump jetty.version from 9.4.19.v20190610 to 9.4.30.v20200611 in /core
Bump jetty.version from 9.4.19.v20190610 to 9.4.30.v20200611 in /core

Bumps `jetty.version` from 9.4.19.v20190610 to 9.4.30.v20200611.

Updates `jetty-server` from 9.4.19.v20190610 to 9.4.30.v20200611
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.19.v20190610...jetty-9.4.30.v20200611)

Updates `jetty-servlet` from 9.4.19.v20190610 to 9.4.30.v20200611
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.19.v20190610...jetty-9.4.30.v20200611)

Updates `jetty-webapp` from 9.4.19.v20190610 to 9.4.30.v20200611
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.19.v20190610...jetty-9.4.30.v20200611)

Signed-off-by: dependabot[bot] <support@github.com>

Closes #91

Change-Id: I798b55646d8dcda61fd75118cf7086ba57b25122

KorAP/Kustvakt,KorAP/Kustvakt,KorAP/Kustvakt,KorAP/Kustvakt